28-07-2013, 04:58 PM
10w40 semi will be fine as there is no way youll be hurting the oil in a nad engine and the XUDs arent keen on synth (i know yours is TUD)
5w40 just means its a little thinner when cold (untill the engine is warm)
5w40 just means its a little thinner when cold (untill the engine is warm)